Grok 4.3

Grok 4.3

Developer	xAI
Release date	April 17, 2026
Family	Grok
Generation	Grok 4.3
Level
Context window	1M tokens
Max output	900K tokens
Input	Text, image, file
Output	Text
Weights	Closed
Predecessor	Grok 4.20
Successor	Grok 4.5
Website	x.ai
Links	Docs

Part of a series on

input: $1.25
cached: $0.20
output: $2.50
Context: 1Mtokens
Released: 6mo ago

Specifications

Model

Developer: xAI
Family: Grok Grok 4.3
Type: Language model
Released: April 17, 2026
Model ID: x-ai/grok-4.3

Capabilities

Input → output: Text, image, file → Text
Max output: 900K tokens
Tokenizer: Grok

Weights

Openness: Closed

Sources:models.devOpenRouter

Metadata synced Nov 5, 2026, 6:04 AM UTC

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